browser: place the cursor properly on the selected file when -g is used

Simply redraw the browser screen upon every keystroke when --showcursor
is in effect, to be certain that the cursor will be placed again at the
correct spot.

This fixes https://savannah.gnu.org/bugs/?52078
and fixes https://savannah.gnu.org/bugs/?52079

.
Reported-by: David Lawrence Ramsey <pooka109@gmail.com>

src/browser.c

@@ -109,7 +109,7 @@ char *do_browser(char *path)
 
 	/* Display (or redisplay) the file list if the list itself or
 	 * the selected file has changed. */
-	if (old_selected != selected)
+	if (old_selected != selected || ISSET(SHOW_CURSOR))
 	    browser_refresh();
 
 	old_selected = selected;